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Reika [66]
3 years ago
15

1. You and your friend are splitting a restaurant bill and leaving a tip. You pay half of the bill plus $5. Your friend pays hal

f of the bill plus 25% of half the bill. You and your friend pay the same total amount. How much is half the bill?
(a) Write an equation. Let x be the cost of half the bill.
(b) Solve the equation. Show your work.
(c) Check your solution. Show your work.
(d) State the solution in complete sentences. Answer:
(2. The graph shows the number of laps Kailee ran around a track over a given number of minutes.
(a) What is the slope of the line? Use the slope formula and show your work.
(b) How many laps did Kailee run per minute?
(c) If she continued to run at the same rate, how many laps would she run in 24 min?
3. A family is tracking its spending habits. Over the past year, the grocery bill has ranged from $110 to $170. Suppose you were going to plot these points on a coordinate grid.
(a) What is a good scale to use for the y-axis? Explain your reasoning.
(b) What is a good interval to use for the y-axis? Explain your reasoning. Answer:
Mathematics
1 answer:
jok3333 [9.3K]3 years ago
8 0
1.
a) x+5=x+0.25x

b) x+5=x+0.25x
5=0.25x
Multiply both sides by 4
20=x

c)20+5=20+0.25*20
20+5=20+5
25+25

d) Each girl payed 25 dollars and half the bill is 20 dollars.

3.
a)each square = $10


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The probability of making a type II error is given by one minus the power of the hypothesis test.

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The power of a hypothesis test is given by:

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6 0
3 years ago
Question is in png pls some1 help !
Reika [66]

Answer:

Triangle x = 30. Pentagon x = 50

Step-by-step explanation:

For the triangle,

Find the angle which is beside x in the triangle,

let's name that angle y, so 55 + 55 + y = 180 ( we find 55 by subtracting both angles 125 from 180)

110 + y = 180

Y = 180 - 110

y = 70

Now that we have find Y, we can easily find x by subtracting 70 from 180 which would be, 70 + X = 180

x = 180 - 70

x = 30

For the pentagon,

Again find the angle which is beside x in the pentagon,

let's name that y again, 90 + 120( by subtracting 60 from 180) + 110( by subtracting 70 from 180)  + 90 + y = 540

210 + 200 + y = 540

410 + y = 540

y = 540 - 410

y = 130

Now that we have find y, we can easily find x by subtracting 130 from 180 which would be, 130 + x = 180

x = 180 - 130

x = 50

Hope this helps!

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3 years ago
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answer: x=3

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